Journal
EXPERT REVIEW OF NEUROTHERAPEUTICS
Volume 12, Issue 6, Pages 687-696Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1586/ERN.12.49
Keywords
clinical; DAT-SPECT; diagnosis; essential tremor; laboratory; olfaction; Parkinson's disease; postmortem; tests
Categories
Funding
- NIH [NINDS R01 NS42859, R01 NS39422, R01 NS073872, T32NS07153-24, R01NS36630, R21 NS077094]
- Parkinson's Disease Foundation
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Distinguishing essential tremor from Parkinson's disease can be challenging, both in the early stages of these diseases and as these diseases progress. Various tremor types (rest, postural, kinetic and intention) may be seen in both essential tremor and Parkinson's disease. Furthermore, with time, the two diseases may coexist within a single patient. Detailed clinical examination with attention to specific features of tremor (frequency, amplitude, pattern and distribution) and associated neurological findings may help distinguish patients with the two diseases. Laboratory testing may provide information that further aids in differentiating the two diseases. These tests include accelerometry and surface electromyography, spiral analysis, dopamine transporter imaging, olfactory testing and, eventually, postmortem histopathology. These tests have limitations and their diagnostic utility requires additional study.
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